New option to allow teams to self reset their progression

libfic/team_history.go

@@ -139,3 +139,47 @@ func (t *Team) DelHistoryItem(kind string, h time.Time, primary *int64, secondar
 		return nil, nil
 	}
 }
+
+// ResetProgressionOnExercice removes all tries and validations for a given Exercice.
+func (t *Team) ResetProgressionOnExercice(exercice *Exercice) error {
+	hints, err := exercice.GetHints()
+	if err != nil {
+		return err
+	}
+
+	flags, err := exercice.GetFlags()
+	if err != nil {
+		return err
+	}
+
+	if _, err := DBExec("DELETE FROM exercice_tries WHERE id_team = ? AND id_exercice = ?", t.Id, exercice.Id); err != nil {
+		return err
+	}
+	if _, err := DBExec("DELETE FROM exercice_solved WHERE id_team = ? AND id_exercice = ?", t.Id, exercice.Id); err != nil {
+		return err
+	}
+
+	for _, hint := range hints {
+		if _, err := DBExec("DELETE FROM team_hints WHERE id_team = ? AND id_hint = ?", t.Id, hint.Id); err != nil {
+			return err
+		}
+
+	}
+
+	for _, flag := range flags {
+		if k, ok := flag.(*FlagKey); ok {
+			if _, err := DBExec("DELETE FROM team_wchoices WHERE id_team = ? AND id_flag = ?", t.Id, k.Id); err != nil {
+				return err
+			}
+			if _, err := DBExec("DELETE FROM flag_found WHERE id_team = ? AND id_flag = ?", t.Id, k.Id); err != nil {
+				return err
+			}
+		} else if mcq, ok := flag.(*MCQ); ok {
+			if _, err := DBExec("DELETE FROM mcq_found WHERE id_team = ? AND id_mcq = ?", t.Id, mcq.Id); err != nil {
+				return err
+			}
+		}
+	}
+
+	return nil
+}